RAD FLM-3 48-Channel Local Fiber Optic Multiplexer

Call us for Pre-sales and discount pricing

  301-924-7400 Support


RAD FLM-3 48-Channel Local Fiber Optic Multiplexer

  • FLM-3 is a Time Division Multiplexer, enabling up to 48 asynchronous terminals to be multiplexed onto a single cable, in point-to-point or ring-type applications. Each channel can be used for either a data signal or a control signal. FLM-3 contains a built-in modem which drives the high speed multiplexed data over a fiber optic cable up to a distance of 4 km (2.5 miles).
  • Multiplexing is performed by sampling all subchannels at a rate much higher than the data rate of each subchannel, and then interleaving the samples into a frame. Then, FLM-3 transmits the frame onto the main channel. At the other end, the samples are recombined to form the original bits. The high sampling rate of FLM-3 enables transmission of async data and control signals with low distortion and without delay.
  • FLM-3 has four 50-pin female connectors, located on the rear panel, each supporting 12 channels. Connection of individual units can be provided by using octopus-type cables. These cables split the cable which extends from the 50-pin connector, into 12 individual cables.
  • Local and remote digital loopback capability, provided through front panel switches and LEDs, enables complete monitoring of the local and remote activities from either end of the system.



  • TDM with integral modem
  • Up to 48 async subchannels over a single cable
  • Subchannel data rates up to 38.4 kbps
  • Point-to-point or ring-type configuration
  • Local and remote loopback
  • Transmission range up to 4 km (2.5 miles)
  • Transparent to character structure
  • Immunity to EMI/RFI, ground loops and lightning
  • 19" rack mountable, 1U
  • Easy to install

48 Port Local Fiber Optic Multiplexer

* Specify:
ST for ST optical connector
(default is SMA)
+ Specify the power supply:
115 for 115V
230 for 230V









RAD Products

For discount pricing on RAD Data Communications  
email us at sales@data-connect.com
or call 301-924-7400